Turbine-blower.



A. L. WOLISON & A. N. HAMMERSTON.

TURBINE BLOWER. APPLICATION FILED APE.24, 1912.

Patented Jan. 14,1913.

v 2 SHEET8SHEET 1.

INVENTORS WITNE88E8 ALBERT I1. VIQLFSON AND ALFRED?) N. HAMMERST'ON, OF NEW YORK, N. Y.

TUBBINE-BLOVJER.

Application tiled April 2 1912.

.l-lufnnnsron. a subject of the E r a v of Germany, residing at New Yer county of New York, State of New Your, have invented a new and useful improvement in Turbilie-Blowers, of which the following is a specification.

This invention relates to turbine blowers, that is, fans driven by steam. turbines, the rotor of the turbine and the fan being combined as a unit.

The object of the invention is to increase the eliiciency of such blowers, and particularly to enable them to run economically at the lower speeds.

In general, the object is to improve the construction of this kind of apparatus in various particulars making for simplicity and cheapness of construction, eliiciency in operation, and convenience of control.

The invention, in its preferred form, will now be described, reference being had to the accompanying drawings, wherein:

Figure 1 is a front view of the apparatus with the casing; Fig. 2 is a longitudinal section of the same with the casing; Fig. 3 is a back view of the rotor; Fig. 4 is a fragmentary front elevation of the spider and the stationary plate or casting formed with or carried thereby and provided with the annular steam chest and nozzles; Fig. 5 is an enlarged section on the line 55 of Fig. 4; and Fig. (3 is a section on a smaller scale on the line 6-6 of Fig. 4-.

The numeral 1 desi natcs a suitable cylindrical casing or open ended tube, and 2 is a spider having an outer ring 3 which is bolted or otherwise removably secured to the rear or outer end of the casing. The spider carries a forwardly-projccting axial shaft t which is preferably fixed station arily in a hub portion 5, as by set screws 6. On this stationary shaft in front of the spider support is mounted the rotor, designated as a whole by the numeral 7. The said rotor or rotary unit comprises a propeller fan composed of a series of blades 8 occupying its outer portion, and a turbine part 9 located concentrically inside of the fan. This turbine part is shown composed Specification of Letters Patent.

Patented Jan. fret, 1913,

Serial No. 892,935.

carried by the spider 2 and are supplied by an annular steam chest. 13 also carried by the spider support. The steam chest is preferably formed inside a stationary back plate or casting 1% carried by the spider at and in front of'its central portion. The annular steam che s supplied by a steam pipe, which ma threaded into a hollow boss 16 projecting'from the baclr of this plate. The annular steam chest preferably extends all. the way around the axis of the device, in a complete circle.

The nozzles 1:2, which are inclined forwardly, preferably located partly or entirely in an annular groove or recess 1'? at the front of the back plate M, which groove is preferably. concentric with and outside of the steam chest 13. They are shown connected with the steam chest by outwardlyextending branch passages 18, formed in ribs 19, which cross the said recess 17. These ribs have suitably inclined sides, so that the nozzles 12 may be screwed into them with their lock nuts 20 abutting against these sides. The nozzles arethus disposed at an angle to the branch passages 18, the outer ends of which may be closed by screw plugs 21.

Means are provided for shutting off any one or more of the nozzles independently of the others. To this end individual valves 22 are provided, one for each nozzle. Thus, to reduce the speed of the blower, one or more of the nozzles are cut off entirely, instead of reducing the flow through all the nozzles by manipulating an adjustable valve controlling the supply to the steam chest, thereby reducing efficiency by lowering the steam pressure. In this Way, an economical control may be substituted for a wasteful one, but in an apparatus of this character another problem presents itself, arising from the fact that a turbine blower op rates on a very small amount of steam, and hence its steam chest, for proper efficiency, must be of restricted cross-section. In recognition of this condition the individual valves 22 are so arranged that they do not enter or obstruct the steam chest. Preferably they cotiperate with the branch passages 18 and seat against the rear ends of the nozzle openings 15. In the particular construction shown the valve stems are disposed perpendicular to these passages 18 and entirely clear of the steam chest, bein threaded into openings in the plate 14 and secreting en" in. rear thereof, who

with convcnieuoa.

rotary unit T has a hub portion 23 out the shaiit 4, 1 a solid web unectiog vhis h .l with the art 9 had thereby blanking at the cente' oi the are secureu) the hue unular strucsuitably secured in the Preferably the forward is unoccupied, and con- W steam chamber 28.

Y and the a l he invention a plu- 29 are provided, the t away from the axis of ed close to the fan blades aust steam issues freely ports and is promptly )y the blades and forced 143 air longitudinally of the easihown, the ports 29 are distribllar series and are located dii the series of buckets 10, be v,nrough the front Wall of the is provided at its front end al enlarged head 30, having c bushing or sleeve 31 is k t! bly on the shaft between this stationary hub portion The eat of L-lltl bore of this bushing is enend of this bore enlargement and The head is thus inclosed in a twooearing, the end Wall of which bears t the rounded face of the head. The 1g '31 is suitably and removably sein the hub portion oi the r the outer Wall of the bu h uv threaded, so that the rotor is screwed (o'er the bushing and its end beariiwn'ocr and keyed as by a screw 60, after latter have been assembled on the shaft, preferably before the shaft is secured of the spider 2, The rear end be provided with spam state the serevrinp' i? we on over the twoqoart bearing; 31, 32 and so cured thereto. this Way a very s ol t with the and etlicient beari structu and made dirt-proo The Slltlit hearing 3], thereon may he relnoi d entire it trouble arise, and be replaced by an- OtllOl' shaft and bearing, Without occasion ing any disassembling (I she rotor he shaft 5 preferably hollow, to con stitute an oil duct and has oil channels extending through its wall, The rear end of the bore of the shaft may be threaded to re ceive an oil pipe leading from an oil cup (not shown) The operation of the apparatus will be obvious from the foregoing".

l l hat is claimed as new is? i. In a turbine blower, the combination of a support, anniiilar steam chest of restricted cross-sectional area carried thereby, nozzle branches with nozzles leading from said annular steam chest, individual cut-cit moans external to said annular steam chest controlling said nozzle branches and a rotary unit comprising a fan with buckets arranged to be impinged by the jets from said nozzles.

2. In a turbine blower, the combination of supporting spider carrying a stationary plate at the centerthereof, said stationary plate having an annular steam chest formed therein, nozzles carried by the st:rt-iotmry plate at the trout thereof, individual outed means external. to said annular steam chest controlling said nozzles, a shaft carried by the spider, and a rotor mounted on said ranged fan blades and buckets, crmetitutmg the inner series and to impinged by the gets from lindricil. casing, a spider renuivably thereto, an annular steam chest \ied by said spider, nozzlles connected am chest, individual cut-cit said annular steam chest azzles, and a rotary unit a turoine blower, the combination shaft and. includin an annular series of 'onary plate comprising concerncomprising a fan and buckets, the latter arranged in relation to' be impinged by the jets from the nozzles. I

5.'In a turbine blower, the combination of a support, an annular'steam chest carried thereby, branches extending outward from said steam chest, forwardly inclined nozzles connected to said branches, individual cutofi valves'therefor, and a rotary unit in front of said steam chest comprising a fan and buckets, the latter arranged in relation to be impingedby the jets from the nozzles.

6. In a turbine blower, the combination of a support, an annular steam chest carried thereby and provided yvith nozzle branches,

nozzles connected to said branches, said noz-' zles being arranged tangentially and ini ALBERT L-. WoLFsoN, ALFRED N. HAMMERSTON. In presence of.-

MAURICE HoTcHNER. CLARENCE G. GALSTON. 

